Patent US2117550A successfully refreshed from Google Patents.
US2117550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-lubricating bearing
Assignee: Pure Carbon Co Inc
•
Filing: 1935-05-20
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Granted: 1938-05-17
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Expires: 1955-05-20
Abstract
No abstract record available.
Inventors
- 👤 Howard B Eynon
- 👤 Myrtice C Burr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:28
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103; F16C17/00; F16C17/04; F16C17/06; F16D; F16D23/00; F16D23/12; F16D23/14; F16C2361/00; F16C2361/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-05-16 | 1941-11-15 | 1942-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-16 | 1945-11-15 | 1946-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-16 | 1949-11-15 | 1950-05-17 | $7700.00 | Window Closed / Lapsed |